Index: trunk/src/org/openstreetmap/josm/gui/widgets/JosmImageView.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/widgets/JosmImageView.java	(revision 15789)
+++ trunk/src/org/openstreetmap/josm/gui/widgets/JosmImageView.java	(revision 15790)
@@ -133,4 +133,5 @@
             if (urlStr.endsWith(".svg") || urlStr.endsWith(".svg?format=raw")) {
                 ImageIcon imgIcon = new ImageProvider(urlStr).setOptional(true).get();
+                setLoadsSynchronously(true); // make sure width/height are properly updated
                 imageField.set(this, imgIcon != null ? imgIcon.getImage() : null);
             } else {